Project Information

Bid Title

Heavy Civil GCCM Services for Black Diamond Trunk Capacity Upgrade

Issuing Agency

King County

Location

Washington

Published Date

Sep 5, 2025

Closing Date

Oct 2, 2025

Government Level

State & Local

Status

Closed

Ref. #

KC001443

Original Source

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Bid Documents

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Project Description

	Abstract: Alternative Procurements KC001443,5
	Title Heavy Civil GCCM Services for Black Diamond Trunk Capacity Upgrade Solicitation Type Alternative Procurements Status Active Buyer Melissa Jordan Email mejordan@kingcounty.gov Synopsis The scope of the GC/CM contract is to increase conveyance capacity and reliability, preventing system overflows, and safeguarding public health and the environment. Preconstruction services include managing project meetings, addressing constructability and risk issues, providing cost estimates and construction plans, exploring cost-saving options, supporting small businesses, and collaborating on logistics, scheduling, and permitting. Addendum Description Addendum 5 has been issued. Proposers must acknowledge all addenda before submitting a proposal. If a Proposer has already submitted a proposal, they must log into the E-Procurement Supplier Portal, acknowledge the addendum, and resubmit. Attachments KC001443-rfp-addendum 5.pdf (277.92 KB) KC001443-rfp-addendum-3.pdf (174.6 KB) KC001443-rfp-addendum-1.pdf (413.42 KB) KC001443-rfp-documents.zip (9.96 MB) KC001443-rfp-addendum 2.pdf (244.21 KB) KC001443-rfp-addendum-4.pdf (9.75 MB) Open Date 9/5/25 02:33:40 PM Close Date 10/2/25 01:30:59 PM Posting Date 9/5/25 Additional Information KC Solicitation NAICS Code(s) 237110;237990 Small Business Requirements Apply? Yes Department NATURAL RESOURCES AND PARKS Division WASTEWATER TREATMENT
	O K

Commodity Codes

• NAICS 237310Highway, Street, and Bridge Construction
• NAICS 237990Other Heavy and Civil Engineering Construction
• NAICS 541330Engineering Services

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